/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.sentry;

import io.sentry.util.Objects;

import org.jetbrains.annotations.ApiStatus;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.TestOnly;

/**
 * Sentry SDK internal diagnostic logger.
 *
 * @since 2021-06-02
 **/
@ApiStatus.Internal
public final class DiagnosticLogger implements ILogger {
    private final @NotNull SentryOptions options;
    private final @Nullable ILogger logger;

    /**
     * Creates a new instance of DiagnosticLogger with the wrapped ILogger.
     *
     * @param options a SentryOptions instance
     * @param logger a ILogger instance
     */
    public DiagnosticLogger(final @NotNull SentryOptions options, final @Nullable ILogger logger) {
        this.options = Objects.requireNonNull(options, "SentryOptions is required.");
        this.logger = logger;
    }

    /**
     * Whether this logger is enabled for the specified SentryLevel.
     *
     * @param level The SentryLevel to test against.
     * @return True if a log message would be recorded for the level. Otherwise false.
     */
    @Override
    public boolean isEnabled(final @Nullable SentryLevel level) {
        final SentryLevel diagLevel = options.getDiagnosticLevel();
        if (level == null) {
            return false;
        }
        return options.isDebug() && level.ordinal() >= diagLevel.ordinal();
    }

    /**
     * Logs a message with the specified level, message and optional arguments.
     *
     * @param level The SentryLevel.
     * @param message The message.
     * @param args The optional arguments to format the message.
     */
    @Override
    public void log(
        final @NotNull SentryLevel level,
        final @NotNull String message,
        final @Nullable Object... args) {
        if (logger != null && isEnabled(level)) {
            logger.log(level, message, args);
        }
    }

    /**
     * Logs a message with the specified level, message and throwable.
     *
     * @param level The SentryLevel.
     * @param message The message.
     * @param throwable The throwable to log.
     */
    @Override
    public void log(
        final @NotNull SentryLevel level,
        final @NotNull String message,
        final @Nullable Throwable throwable) {
        if (logger != null && isEnabled(level)) {
            logger.log(level, message, throwable);
        }
    }

    /**
     * Logs a message with the specified level, throwable, message and optional arguments.
     *
     * @param level The SentryLevel.
     * @param throwable The throwable to log.
     * @param message The message.
     * @param args The optional arguments to format the message.
     */
    @Override
    public void log(
        final @NotNull SentryLevel level,
        final @Nullable Throwable throwable,
        final @NotNull String message,
        final @Nullable Object... args) {
        if (logger != null && isEnabled(level)) {
            logger.log(level, throwable, message, args);
        }
    }

    @TestOnly
    public @Nullable ILogger getLogger() {
        return logger;
    }
}
